Patents by Inventor Betty Andreasson

Betty Andreasson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Emergency signal light
    Patent number: 4047165
    Abstract: An emergency warning flashing battery operated signal light having a depressable switch and an automatic heat sensing switch.
    Type: Grant
    Filed: May 20, 1976
    Date of Patent: September 6, 1977
    Inventors: Betty Andreasson, Rebecca M. Anderson